Compilare: main.cpp: In function 'int main()': main.cpp:15:25: warning: unused variable 'k' [-Wunused-variable] int i, j, r, cs, cs2, k, ccs; ^ main.cpp:15:28: warning: unused variable 'ccs' [-Wunused-variable] int i, j, r, cs, cs2, k, ccs; ^~~ main.cpp:22:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &r); ^ main.cpp:43:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &r); ^